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INKBIRDPLUS PTH-9A 6-in-1 Indoor Air Quality Monitor
This Air Quality detector is designed with 3 stages of AQI - normal mode (0-50), warning mode (51-100), and danger mode (101-500).
When the AQI exceeds 100 and the buzzer is on, the buzzer will sound an alarm.
At this time, you need to long press the "+" button to stop the alarm.
NOTE: The alarm value cannot be set.
High-Accurate NDIR Sensor
It can accurately detect the current CO2 concentration, PM2.5, PM10, AQI, temperature, and humidity in the air.
Time Display
The color display with backlight makes each value clear at a glance, and you can also check the time/date/year on the detector.
Convenient USB Charging
NOTE: Since the detector contains 6 sensors, the battery drains relatively quickly, we recommend connecting the adapter to use it.
Hanging Design
A hanging hole is designed on the back of this portable CO2 detector so that you can hang it up to the wall for easy viewing.
To ensure the accuracy of measurement, this meter has the calibration function.
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Calibration Function
Press three buttons at the same time in an open environment after shutdown and let it stand for 200 seconds to calibrate this detector easily.
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NOTE: We recommend calibrating the device in an open environment when using the air quality monitor for the first time to ensure accuracy.
WIDE APPLICATION
J Scott
Reviewed in the United States on January 14, 2025
I read several reviews of this and similar, competing products. Now in use for a couple of months (indoors) and it is doing the job I wanted. Though it was completely imperceptible, the particle count jumped one day. The air quality outside was reported as unhealthy for some reason. Not obvious as to why but a hazy day. So, I turned on our HVAC fans both up and downstairs. The fans we have are carbon filters that you use in place of the filters you would otherwise use at every vent. Within an hour of running the fans, the particle count dropped. back down to the typical value of one or two. So, I am confident that I'm getting good monitoring.I also place it in the kitchen one evening as we cooked away. The exhaust fan was on which works quite well. Nevertheless, at one point the monitor alarm went off. Opening a window to allow the fan to work better made a difference. On another occasion over the holidays, someone decided we should have candles burning everywhere. Once again the alarm went off. Was a good reason to blow some of them out.I did notice that the CO2 aspect of the device is a bit fiddly. Mine hovers around 400 and never goes up or down. Then again, why should it? I don't think that gas varies much. Our gas heater and cooking have not effects. That said, I'm not sure about calibration and can't speak to that. Frankly, CO2 is not my concern. CO, yes. CO2, no.
Zahi I.
Reviewed in the United Arab Emirates on June 28, 2024
I tested it by blowing some smoke, put it inside, outside... It seems to work perfectly
Harjeet s.
Reviewed in India on November 9, 2024
Nicely work. User friendly.
Jeff
Reviewed in Canada on September 17, 2023
I've wanted to test the air quality of my living space for a while and this device does just that. It's simple to use, can be calibrated to your outdoor air quality to increase accuracy. I discovered that my home is a bit too sealed up and could benefit from some air exchange! High levels of CO2 can lead to brain fog, sleepiness, and general listlessness. CO2 levels are detected in ppm or Parts Per Million. The higher the CO2, the less oxygen you're breathing, hence, the lower air quality. Levels under 700ppm are considered good. Outdoor air quality, depending on your location will be around 400+. You can also set an alarm level which will sound when it passes the set threshold. This is a very useful device for quickly testing the local air quality. I've tested the air in my basement, bedroom, car, office, among other locations. Rechargeable and cordless, it's very convenient to use. Backlit display can be turned off when testing at night while sleeping, and to conserve battery power. In addition to CO2 ppm, it also displays temperature in Celsius or Fahrenheit, and humidity. I have literally been carrying this thing around with me to test the air quality wherever I go! It's pretty amazing. There is a slight delay when you turn it on but it seems fairly accurate, although the only way to truly test the accuracy would be to have an alternative and trusted device for comparison. If you are curious and scientifically minded, you'll find it a useful, intriguing, and reasonably priced tool for testing, indoors or outdoors. I can't recommend this enough.
Gary
Reviewed in the United States on May 4, 2023
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Reviewed in India on February 4, 2023
One out of the numbers ordered is not working. How to get it repaired or returned?
Krono
Reviewed in Singapore on April 16, 2023
Item delivered is as described. Very good sensitivity. Wish it could have Bluetooth functionality.
JLJ
Reviewed in the United States on April 7, 2022
Monitoring CO2 levels is one of the easiest and most effective ways to get a handle on our indoor air quality. High CO2 levels can of course negatively impact our functioning, but additionally since COVID-19 is an airborne virus, by proxy high CO2 levels can indicate lack of adequate ventilation and help us make informed decisions about our environment. This is an important tool, both in the home and when traveling—measuring air quality on planes, in hotel rooms, restaurants, doctors offices, etc.With this use in mind, I wanted something small, unobtrusive, and wireless that I could just throw in my bag when going out, but couldn’t justify the expense of the more widely used Aranet 4. This Inkbird monitor, while lacking an app for tracking, is an otherwise reasonable low cost option and, like the Aranet, uses an NDIR sensor. So far the CO2 readings seem within a predictable range—around 400 outside and between 650 and 950 inside, increasing over time in occupied rooms as people’s exhalations build up and decreasing when windows are opened.A couple of downsides to this unit: most notably the battery which needs to be recharged daily. Replaceable batteries, as the Aranet has, would make this more useful for those of us taking it outside the home. The temperature measurement also swings wildly, from matching my other thermostats when running on battery to a full 10 degrees off (higher) when plugged in and charging.Overall very easy to use and calibrate, and a good value for the price.
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